<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Auth;
use Cache;
use View;
use App\Follower;
use App\FollowRequest;
use App\Profile;
use App\Story;
use App\User;
use App\UserFilter;
use League\Fractal;
use App\Util\Lexer\Nickname;
use App\Util\Webfinger\Webfinger;
use App\Transformer\ActivityPub\ProfileOutbox;
use App\Transformer\ActivityPub\ProfileTransformer;

class ProfileController extends Controller
{
	public function show(Request $request, $username)
	{
		$user = Profile::whereNull('domain')
			->whereNull('status')
			->whereUsername($username)
			->firstOrFail();

		if($request->wantsJson() && config_cache('federation.activitypub.enabled')) {
			return $this->showActivityPub($request, $user);
		}
		return $this->buildProfile($request, $user);
	}

	protected function buildProfile(Request $request, $user)
	{
		$username = $user->username;
		$loggedIn = Auth::check();
		$isPrivate = false;
		$isBlocked = false;
		if(!$loggedIn) {
			$key = 'profile:settings:' . $user->id;
			$ttl = now()->addHours(6);
			$settings = Cache::remember($key, $ttl, function() use($user) {
				return $user->user->settings;
			});

			if ($user->is_private == true) {
				$profile = null;
				return view('profile.private', compact('user'));
			}

			$owner = false;
			$is_following = false;

			$is_admin = $user->user->is_admin;
			$profile = $user;
			$settings = [
				'crawlable' => $settings->crawlable,
				'following' => [
					'count' => $settings->show_profile_following_count,
					'list' => $settings->show_profile_following
				],
				'followers' => [
					'count' => $settings->show_profile_follower_count,
					'list' => $settings->show_profile_followers
				]
			];
			$ui = $request->has('ui') && $request->input('ui') == 'memory' ? 'profile.memory' : 'profile.show';

			return view($ui, compact('profile', 'settings'));
		} else {
			$key = 'profile:settings:' . $user->id;
			$ttl = now()->addHours(6);
			$settings = Cache::remember($key, $ttl, function() use($user) {
				return $user->user->settings;
			});

			if ($user->is_private == true) {
				$isPrivate = $this->privateProfileCheck($user, $loggedIn);
			}

			$isBlocked = $this->blockedProfileCheck($user);

			$owner = $loggedIn && Auth::id() === $user->user_id;
			$is_following = ($owner == false && Auth::check()) ? $user->followedBy(Auth::user()->profile) : false;

			if ($isPrivate == true || $isBlocked == true) {
				$requested = Auth::check() ? FollowRequest::whereFollowerId(Auth::user()->profile_id)
					->whereFollowingId($user->id)
					->exists() : false;
				return view('profile.private', compact('user', 'is_following', 'requested'));
			}

			$is_admin = is_null($user->domain) ? $user->user->is_admin : false;
			$profile = $user;
			$settings = [
				'crawlable' => $settings->crawlable,
				'following' => [
					'count' => $settings->show_profile_following_count,
					'list' => $settings->show_profile_following
				],
				'followers' => [
					'count' => $settings->show_profile_follower_count,
					'list' => $settings->show_profile_followers
				]
			];
			$ui = $request->has('ui') && $request->input('ui') == 'memory' ? 'profile.memory' : 'profile.show';
			return view($ui, compact('profile', 'settings'));
		}
	}

	public function permalinkRedirect(Request $request, $username)
	{
		$user = Profile::whereNull('domain')->whereUsername($username)->firstOrFail();

		if ($request->wantsJson() && config_cache('federation.activitypub.enabled')) {
			return $this->showActivityPub($request, $user);
		}

		return redirect($user->url());
	}

	protected function privateProfileCheck(Profile $profile, $loggedIn)
	{
		if (!Auth::check()) {
			return true;
		}

		$user = Auth::user()->profile;
		if($user->id == $profile->id || !$profile->is_private) {
			return false;
		}

		$follows = Follower::whereProfileId($user->id)->whereFollowingId($profile->id)->exists();
		if ($follows == false) {
			return true;
		}

		return false;
	}

	public static function accountCheck(Profile $profile)
	{
		switch ($profile->status) {
			case 'disabled':
			case 'suspended':
			case 'delete':
				return view('profile.disabled');
				break;

			default:
				break;
		}
		return abort(404);
	}

	protected function blockedProfileCheck(Profile $profile)
	{
		$pid = Auth::user()->profile->id;
		$blocks = UserFilter::whereUserId($profile->id)
				->whereFilterType('block')
				->whereFilterableType('App\Profile')
				->pluck('filterable_id')
				->toArray();
		if (in_array($pid, $blocks)) {
			return true;
		}

		return false;
	}

	public function showActivityPub(Request $request, $user)
	{
		abort_if(!config_cache('federation.activitypub.enabled'), 404);
		abort_if($user->domain, 404);

		$fractal = new Fractal\Manager();
		$resource = new Fractal\Resource\Item($user, new ProfileTransformer);
		$res = $fractal->createData($resource)->toArray();
		return response(json_encode($res['data']))->header('Content-Type', 'application/activity+json');
	}

	public function showAtomFeed(Request $request, $user)
	{
		abort_if(!config('federation.atom.enabled'), 404);

		$profile = $user = Profile::whereNull('status')->whereNull('domain')->whereUsername($user)->whereIsPrivate(false)->firstOrFail();
		if($profile->status != null) {
			return $this->accountCheck($profile);
		}
		if($profile->is_private || Auth::check()) {
			$blocked = $this->blockedProfileCheck($profile);
			$check = $this->privateProfileCheck($profile, null);
			if($check || $blocked) {
				return redirect($profile->url());
			}
		}
		$items = $profile->statuses()->whereHas('media')->whereIn('visibility',['public', 'unlisted'])->orderBy('created_at', 'desc')->take(10)->get();
		return response()->view('atom.user', compact('profile', 'items'))
		->header('Content-Type', 'application/atom+xml');
	}

	public function meRedirect()
	{
		abort_if(!Auth::check(), 404);
		return redirect(Auth::user()->url());
	}

	public function embed(Request $request, $username)
	{
		$res = view('profile.embed-removed');

		if(strlen($username) > 15 || strlen($username) < 2) {
			return response($res)->withHeaders(['X-Frame-Options' => 'ALLOWALL']);
		}

		$profile = Profile::whereUsername($username)
			->whereIsPrivate(false)
			->whereNull('status')
			->whereNull('domain')
			->first();

		if(!$profile) {
			return response($res)->withHeaders(['X-Frame-Options' => 'ALLOWALL']);
		}

		$content = Cache::remember('profile:embed:'.$profile->id, now()->addHours(12), function() use($profile) {
			return View::make('profile.embed')->with(compact('profile'))->render();
		});

		return response($content)->withHeaders(['X-Frame-Options' => 'ALLOWALL']);
	}

	public function stories(Request $request, $username)
	{
		abort_if(!config_cache('instance.stories.enabled') || !$request->user(), 404);
		$profile = Profile::whereNull('domain')->whereUsername($username)->firstOrFail();
		$pid = $profile->id;
		$authed = Auth::user()->profile;
		abort_if($pid != $authed->id && $profile->followedBy($authed) == false, 404);
		$exists = Story::whereProfileId($pid)
			->where('expires_at', '>', now())
			->count();
		abort_unless($exists > 0, 404);
		return view('profile.story', compact('pid', 'profile'));
	}
}
